Zero population growth is achieved when ____
a. a population reaches the carrying capacity of the environment
b. emigration and immigration are balanced, and the number of births equals the number of deaths
c. births exceed deaths
d. deaths exceed births
e. emigration and immigration are prevented
ANSWER: b
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a. true b. false
In nature, a biofilm may include
a. bacteria only. b. microscopic algae only. c. fungi only. d. protists only. e. bacteria, microscopic algae, protests, and fungi
In plant cells, chloroplasts are found ____
a. on the cell membrane b. in the cytoplasm of the cell c. in the stroma d. in the thylakoids e. in the central vacuole
Miller and Urey's experiment provided support for what hypothesis? In what way did the discovery of hydrothermal vents alleviate concern about the validity of their simulation of the Earth's primitive atmosphere?
What will be an ideal response?